阅读说明：本技术 抗菌产品、抗菌棒及储水容器 (Antibacterial product, antibacterial rod and water storage container ) 是由 平井明 于 2019-12-04 设计创作，主要内容包括：本发明涉及一种抗菌产品,更具体而言,在金属纤维的表面具有含烧结银表面层的抗菌产品。其制备方法如下：第一步骤,通过将1至50重量份的银盐类化合物粉末添加并溶解于100重量份的水中来制备银盐类溶解液；第二步骤,将上述银盐类溶解液涂覆到金属纤维的一部分表面或全部表面上；及第三步骤,在氧气或氮气气氛中在440℃至500℃的温度下烧结涂覆到上述金属纤维的一部分表面或全部表面上的上述银盐类溶解液,以在氧气或氮气气氛下形成含烧结银表面层,上述金属纤维的截面宽度为1mm至3mm,金属纤维的截面高度为0.01mm至0.05mm。本发明还涉及一种具有包围抗菌产品的塑料的抗菌棒或容纳抗菌棒的储水容器。本发明的抗菌产品、抗菌棒及储水容器具有极好的杀菌效果。(The present invention relates to an antibacterial product, and more particularly, to an antibacterial product having a surface layer containing sintered silver on the surface of metal fibers. The preparation method comprises the following steps: a first step of preparing a silver salt-based dissolving solution by adding and dissolving 1 to 50 parts by weight of silver salt-based compound powder in 100 parts by weight of water; a second step of coating the silver salt solution on a part of or the whole surface of the metal fiber; and a third step of sintering the silver salt solution coated on a part of or the entire surface of the metal fiber in an oxygen or nitrogen atmosphere at a temperature of 440 to 500 ℃ to form a sintered silver-containing surface layer in an oxygen or nitrogen atmosphere, wherein the metal fiber has a cross-sectional width of 1 to 3mm and a cross-sectional height of 0.01 to 0.05 mm. The invention also relates to an antibacterial stick with plastic surrounding the antibacterial product or a water storage container containing the antibacterial stick. The antibacterial product, the antibacterial rod and the water storage container have excellent sterilization effects.)

1. An antibacterial product, characterized by being prepared by a preparation method comprising the steps of: a first step of preparing a silver salt-based dissolving solution by adding and dissolving 1 to 50 parts by weight of silver salt-based compound powder in 100 parts by weight of water; a second step of coating the silver salt solution on a part of or the whole surface of the metal fiber; and a third step of sintering the silver salt solution coated on a part of or the entire surface of the metal fiber in an oxygen or nitrogen atmosphere at a temperature of 440 to 500 ℃ to form a sintered silver-containing surface layer in an oxygen or nitrogen atmosphere, wherein the metal fiber has a cross-sectional width of 1 to 3mm and a cross-sectional height of 0.01 to 0.05 mm.

2. The antibacterial product according to claim 1, wherein in the above-mentioned third step of sintering at a temperature of 440 ℃ to 500 ℃ in an oxygen or nitrogen atmosphere, sintering is performed at a temperature of 440 ℃ to 500 ℃ in a nitrogen atmosphere, and then sintering is performed at a temperature of 440 ℃ to 500 ℃ in an oxygen atmosphere.

3. An antibacterial stick characterized by comprising a plastic material surrounding the antibacterial product according to claim 1 or 2.

4. A water storage container characterized by containing the antibacterial stick of claim 3.

5. A method of making an antimicrobial product, comprising: a first step of preparing a silver salt-based dissolving solution by adding and dissolving 1 to 50 parts by weight of silver salt-based compound powder in 100 parts by weight of water; a second step of coating the silver salt solution on a part of or the whole surface of the metal fiber; and a third step of sintering the silver salt solution coated on a part of or the entire surface of the metal fiber in an oxygen or nitrogen atmosphere at a temperature of 440 to 500 ℃ to form a sintered silver-containing surface layer in an oxygen or nitrogen atmosphere, wherein the metal fiber has a cross-sectional width of 1 to 3mm and a cross-sectional height of 0.01 to 0.05 mm.

6. The method of producing an antibacterial product according to claim 5, wherein in the above-mentioned third step of sintering at a temperature of 440 ℃ to 500 ℃ in an oxygen or nitrogen atmosphere, sintering is performed at a temperature of 440 ℃ to 500 ℃ in a nitrogen atmosphere, and then sintering is performed at a temperature of 440 ℃ to 500 ℃ in an oxygen atmosphere.

Technical Field

The present invention relates to an antibacterial product, and more particularly, to an antibacterial product having a surface layer containing sintered silver on the surface of metal fibers. Also, the present invention relates to an antibacterial stick having plastic surrounding the antibacterial product or a water storage container accommodating the antibacterial stick. The antibacterial product, the antibacterial rod and the water storage container have excellent sterilization effects.

Background

As an example of the bactericidal food, a chewing gum containing xylitol has a bactericidal effect on tooth decay and other oral diseases. In fact, since the early 70 s of the 20 th century, the effects of xylitol on tooth decay and other oral diseases have been proven to be effective through various in vivo or in vitro experiments, clinical studies, practical studies, and the like. However, chewing gums containing xylitol have some deficiencies in their sterilization effect.

Various oral diseases in dentistry, including tooth decay, gingivitis, periodontal disease, etc., can be caused by various causes. The above causes can be classified into systemic causes and local causes, and it is known that the more important cause is the local cause. The most important of the local causes is the bacteria, i.e. pathogenic microorganisms, that are often present in the oral cavity.

On the other hand, in nature, thousands of microorganisms are widely present in various ecosystems, and such microorganisms cause various diseases and pollution. For example, it has been known that about 300 kinds of microorganisms reside on the surface of a tooth, between the tooth and the gum at the root of a tooth, on the surface of a tongue, and the like in a human oral cavity, and the presence of such microorganisms can be said to be a normal phenomenon when performing appropriate oral hygiene activities.

However, if proper oral hygiene activities are not performed, various oral diseases such as tooth decay, halitosis, gingivitis, and periodontal disease may be caused by pathogenic microorganisms among the above microorganisms, and teeth may be lost in a serious case. For example, lactic acid produced by degradation of carbohydrates such as sugar and starch in food residues adhering to teeth by fermentation action of pathogenic microorganisms residing in the oral cavity may peel lime in hard tissues of teeth to produce tooth decay, and when anaerobic pathogenic bacteria are proliferated in large amounts, it may be called a cause of various oral diseases.

Pathogenic microorganisms residing in the oral cavity attach to the tooth surfaces, form a bacterial population called plaque after several hours and proliferate, and initially concentrate to attach to the visible tooth surfaces in the upper gingival part and form plaque, but gradually develop to form plaque also in the tooth surfaces in the lower gingival part. When the plaque is formed on the surface of teeth, pathogenic microorganisms generate acid by using sugar entering the oral cavity, and the acid causes calcium decalcification of minerals, which are main components of teeth, to initiate tooth decay, which destroys teeth.

On the other hand, among bacteria present in plaque in the lower part of the gum, anaerobic gram-negative microorganisms, in particular, secrete toxins, proteolytic enzymes, etc. to directly destroy periodontal tissues or react with immune cells of our body, thereby inducing the production of various immune substances, and these substances are likely to cause inflammation and destruction of periodontal tissues.

The severity of the once destroyed tooth or periodontal tissue is such that it cannot be restored to its original tissue state, and thus, fundamentally blocking the propagation of pathogenic microorganisms in the oral cavity, which are typical factors of these local causes, can be a method for preventing or rapidly treating oral diseases.

The microorganisms causing the oral diseases described above include Streptococcus mutans, Porphyromonas gingivalis, and the like. Streptococcus mutans is a pathogenic bacterium of tooth decay and is a cause of a variety of oral diseases. In particular, glucan and lactic acid produced during the growth of streptococcus mutans destroys the enamel of the teeth and produces plaque and initiates tooth decay.

Conventionally, as the bactericidal enzyme, for example, sodium copper chlorophyllin, a complex containing fluorine and chlorine components such as sodium fluoride and benzethonium chloride, an aromatic carboxylic acid including benzoic acid, allantoin, tocopherol acetate, an antifibrase, an antibiotic, or the like has been used.

Silver has long been known to have excellent water purification ability, and has been used for a long time. Silver is a metal having a property of passing water and flooding silver ions in water, which has a high bactericidal ability in proportion to the concentration thereof. Therefore, the development of antibacterial products using silver is urgently required.

(Prior art document)

(patent document)

Korean granted patent No. 10-1046621

Disclosure of Invention

Technical problem

In order to solve the problem that the existing antibacterial product is difficult to experience instantly due to the sterilizing effect, the invention provides an antibacterial product with excellent sterilizing property, and the antibacterial product can have excellent sterilizing property even if the size is small.

However, the technical problems to be solved by the present invention are not limited to the above-described technical problems, and those skilled in the art to which the present invention pertains will clearly understand that the technical problems are not mentioned or others from the following descriptions.

Means for solving the problems

An embodiment of the present invention provides an antibiotic product prepared by a method including the steps of: a first step of preparing a silver salt-based dissolving solution by adding and dissolving 1 to 50 parts by weight of silver salt-based compound powder in 100 parts by weight of water; a second step of coating the silver salt solution on a part of or the whole surface of the metal fiber; and a third step of sintering the silver salt solution coated on a part of or the entire surface of the metal fiber in an oxygen or nitrogen atmosphere at a temperature of 440 to 500 ℃ to form a sintered silver-containing surface layer in an oxygen or nitrogen atmosphere, wherein the metal fiber has a cross-sectional width of 1 to 3mm and a cross-sectional height of 0.01 to 0.05 mm.

In the above-described third step of sintering at a temperature of 440 ℃ to 500 ℃ in an oxygen or nitrogen atmosphere, sintering is performed at a temperature of 440 ℃ to 500 ℃ in a nitrogen atmosphere, and then sintering is performed at a temperature of 440 ℃ to 500 ℃ in an oxygen atmosphere.

Another embodiment of the present invention provides a production method, comprising: a first step of preparing a silver salt-based dissolving solution by adding and dissolving 1 to 50 parts by weight of silver salt-based compound powder in 100 parts by weight of water; a second step of coating the silver salt solution on a part of or the whole surface of the metal fiber; and a third step of sintering the silver salt solution coated on a part of or the entire surface of the metal fiber in an oxygen or nitrogen atmosphere at a temperature of 440 to 500 ℃ to form a sintered silver-containing surface layer in an oxygen or nitrogen atmosphere, wherein the metal fiber has a cross-sectional width of 1 to 3mm and a cross-sectional height of 0.01 to 0.05 mm.

In the above-described third step of sintering at a temperature of 440 ℃ to 500 ℃ in an oxygen or nitrogen atmosphere, sintering is performed at a temperature of 440 ℃ to 500 ℃ in a nitrogen atmosphere, and then sintering is performed at a temperature of 440 ℃ to 500 ℃ in an oxygen atmosphere.

ADVANTAGEOUS EFFECTS OF INVENTION

The antibacterial product, the antibacterial rod and the water storage container have excellent sterilization effect by the sintered silver-containing surface layer on the surface of the metal fiber. In particular, it shows a strong sterilizing power against anaerobic bacteria weaker than oxygen. This is because the size of the dissolved oxygen molecules in water is ultrafine (e.g., 10 a) by the catalytic action of silver ions^-6mm), in particular, can be a bactericidal power-enhancing factor against anaerobic bacteria. Furthermore, the effect reaction can be enhanced by the nitrogen and oxygen atmosphere sintering method according to the present invention.

Drawings

Fig. 1(a) shows a schematic view of the antibacterial product of the present invention, and fig. 1(b) shows an enlarged view of the metal fiber of the antibacterial product of the present invention.

Fig. 2 shows a schematic view of placing the antibacterial product of the present invention in a water storage container.

Detailed Description

Hereinafter, embodiments of the present invention will be described in detail so that the present invention can be easily implemented by those skilled in the art. However, it should be noted that the present invention is not limited to these embodiments, but may be implemented in various other embodiments.

Antimicrobial product

Fig. 1(a) shows a schematic view of the antibacterial product of the present invention, and fig. 1(b) shows an enlarged view of the metal fiber of the antibacterial product of the present invention.

As shown in fig. 1(a), examples of the above-mentioned antibacterial product include metal fibers. The metal fibers may be made of stainless steel. The metal fiber is made of an elongated metal, and is easily bent due to a thin thickness, and a specific surface area (surface area per unit mass) can be maximized due to free bending, and sterilization efficiency can be improved. That is, the area contacting with water can be maximized, so that the sterilization efficiency can be remarkably improved.

As shown in fig. 1(b), the metal fiber has a thin thickness t and a wide width w, and thus the surface area of the metal fiber can be maximized. For example, the width of the section of the metal fiber may be 1mm to 3mm, and the height of the section of the metal fiber may be 0.01mm to 0.05 mm. Here, if the width of the cross section of the metal fiber is less than 1mm, the sterilization effect is reduced, and if the width of the cross section of the metal fiber is greater than 3mm, the bendability is reduced, and the volume of the antibacterial product may increase. Further, if the height of the cross section of the metal fiber is less than 0.01mm, the metal fiber may be torn when the antibacterial product is used, and if the height of the cross section of the metal fiber exceeds 0.05mm, the bending property is lowered, which increases the volume of the antibacterial product and the weight of the antibacterial product, which is not preferable. From the above viewpoint, the ratio of the width to the height of the cross section of the metal fiber is preferably in the range of 1:40 to 120, respectively.

Here, if the weight of the metal fiber is about 6g, the area of the sintered silver-containing surface layer in the front and back surfaces of the elongated metal fiber constituting the antibacterial product may be calculated to be about 93,000mm². On the other hand, if only the interior of a 500ml water bottle had a sintered silver-containing surface layer, the area could be calculated to be 74,946mm². In other wordsEven if the antibacterial product made of metal fibers has a small size, the water receiving area of the antibacterial product made of metal fibers is 1.24 times as large as that of a water bottle having a sintered silver-containing surface layer inside. Therefore, the antibacterial product of the present invention has higher sterilization efficiency than that of the container even in a small area, and has higher performance than the existing water bottle having a silver sintered coating layer coated on the inner wall of the portable water bottle. From the above viewpoint, the sintered area of the silver film per weight of the metal fiber is preferably 9,000mm²G to 22,000mm²In the range of/g.

Here, the method of forming the sintered silver-containing surface layer on the surface of the metal fiber may include: a first step of preparing a silver salt-based dissolving solution by adding and dissolving 1 to 50 parts by weight of silver salt-based compound powder in 100 parts by weight of water; a second step of coating the silver salt solution on a part of or the whole surface of the metal fiber; and a third step of sintering the silver salt-based solution coated on a part of or the entire surface of the metal fiber at a temperature of 440 to 500 ℃ in an oxygen or nitrogen atmosphere to form a sintered silver-containing surface layer in an oxygen or nitrogen atmosphere.

Further, in the above-described third step of sintering at a temperature of 440 ℃ to 500 ℃ in an oxygen or nitrogen atmosphere, sintering at a temperature of 440 ℃ to 500 ℃ in a nitrogen atmosphere may be performed, and then sintering at a temperature of 440 ℃ to 500 ℃ in an oxygen atmosphere may be performed. If the sintering treatment is performed only in an oxygen atmosphere, a sufficient sterilization effect cannot be obtained. If the sintering treatment is performed only in a nitrogen atmosphere, or if the sintering is performed first in an oxygen atmosphere and then in a nitrogen atmosphere, although the sterilizing effect is improved initially, the sterilizing performance is lowered as the antibacterial product is repeatedly used. Therefore, in order to maintain the life of the bactericidal property for a long time, it is preferable to sinter at a temperature of 440 ℃ to 500 ℃ in a nitrogen atmosphere and then sinter at a temperature of 440 ℃ to 500 ℃ in an oxygen atmosphere.

When the thickness of the silver-containing surface layer sintered by the above-mentioned process is 0.1 to 20 μm, a very good bactericidal effect is obtained.

Antibacterial stick

An antibacterial stick according to an embodiment of the present invention includes an antibacterial product made of metal fibers. The shape of the antibiotic product composed of the thin metal fiber is easily changed, and thus it is preferable to externally fix the shape of the antibiotic product made of the metal fiber. For example, plastic may be used to surround the exterior of an antimicrobial product made of metal fibers. Therefore, when the inside of the water storage container is metal, the metal fibers of the antibacterial product can be prevented from finely scraping the metal inside while moving inside the water storage container.

Water storage container

Fig. 2 shows a water storage container 20 having a cover 30 according to an embodiment of the present invention. The antibacterial product 100 may gush out silver ions while being in contact with the water 10.

Among them, the water storage container of another embodiment of the present invention may gush out silver ions by contacting a rod in which the antibacterial product 100 made of metal fiber is surrounded with plastic with water inside. The water storage container may be made of metal, plastic, etc., and the material of the water storage container is not limited as long as it can store water.

Experimental example evaluation of bactericidal Property of the present invention

Next, a sterilization test of the spheres having the silver sintered coating layer of the present invention was performed. The test was carried out in the Japanese food analysis center.

After culturing the unicellular and Streptococcus mutans test bacteria in a common agar medium (Nippon Rongyan chemical Co., Ltd.) at a temperature of 35 ℃ (+ -1 ℃) for 18 to 24 hours, the cells were suspended in purified water (in physiological saline in the case of Staphylococcus aureus), and the cells were adjusted so that the number of bacteria was 10⁷～10⁸Perml and used as the test bacteria. Clinical specimens were as follows:

clinical specimens: ball with sintered silver coating

Comparison: adding purified water into a container made of antibacterial synthetic resin

Test solution: a test solution was prepared by inoculating 2ml of test bacterial suspension into a sample containing 200ml of mineral water in a clinical specimen sterilized by dry heat (170 ℃ C., 1 hour). After storage at 20 ℃ (± 1 ℃), the test solutions were diluted 10-fold in SCDLP medium (japanese pharmaceutical co., ltd.) as they were after 6 hours and 24 hours, and viable cell counts in the test solutions were measured using the medium for measuring bacterial count.

The test results are shown in tables 1 and 2 below. The results of the bactericidal activity test confirmed that the bactericidal composition has a sufficient bactericidal effect on unicellular bacteria and streptococcus mutans. Table 1 shows the results of the viable cell count measurements over time for the monad test bacteria in the test solution, and table 2 shows the results of the viable cell count measurements over time for the streptococcus mutans test bacteria in the test solution.

TABLE 1 measurement of viable cell count of test solution

Storage temperature (< 10000: no detection): 20 deg.C

As shown in Table 1 above, it was confirmed that the test solution of the present invention exhibited viable cell counts significantly different from those of the control group from 5 to 10 minutes for the monimonas. And it was confirmed that viable cell count was hardly detected after 20 minutes.

TABLE 2 measurement of viable cell count of test solution

Storage temperature (< 10000: no detection): 20 deg.C

As shown in table 2 above, it was confirmed that the test solution of the present invention exhibited a significantly different viable cell count from the control group from 10 to 15 minutes, and that the viable cell count was hardly detected after 20 minutes.

TABLE 3

Antibacterial product of metal fiber and silver ion gush out test result of container as comparative example

Immersion time in water	Antibacterial stick1	Comparison container2
			1 minute	0.42mg/L	0.00mg/L
3 minutes	0.60mg/L	0.00mg/L
			6 minutes	0.97mg/L	0.00mg/L
60 minutes	1.30mg/L	0.00mg/L
			Surface area of silver sintered film	93,000mm2	74,946mm2

¹Silver ion emission value in Water (put antibacterial stick into 500ml PET bottle to measure silver ion emission value)

²Silver ion in water (in500mL vessel having silver sintered film formed on inner wall thereof

As shown in table 3 above, it is understood that the antibacterial product made of the metal fiber of the present invention is superior in silver ion gush out compared to the comparative container.